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United States Patent | 6,246,511 |
Jameson | June 12, 2001 |
A system is provided for partially or completely offsetting optical fiber amplifier gain spectrum variations due to temperature by setting the optical pump signal leading into the amplifier to a desired wavelength value. Optical fiber amplifiers have gain spectrum variations associated with temperature and gain spectrum variations associated with the optical pump signal wavelength. By controlling the optical pump signal wavelength supplying the amplifier, the optical fiber amplifier gain variations due to temperature can be partially or completely offset, which helps minimize total amplifier spectral gain variations. The invention is applicable to dense wavelength division multiplexing (DWDM) systems.
Inventors: | Jameson; Ralph S. (Allentown, PA) |
Assignee: | Agere Systems Optoelectronics Guardian Corp. (Miami Lakes, FL) |
Appl. No.: | 372973 |
Filed: | August 12, 1999 |
Current U.S. Class: | 359/337; 359/337.1; 372/6; 372/32; 398/9; 398/157 |
Intern'l Class: | H01S 003/30; H01S 003/10; G02B 006/34 |
Field of Search: | 359/160,177,194,337,341 372/6,32,34 305/14,27,37 |
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